Improved belt-tightener



@hitch tstes getestl @ffice Laim Patent N8. 81.285, dated August 18, 1868.

IMPROVED BELT-TIGHTENBR.

@te rtchule'nntrer to iu tiges: @fettes @anni mit making part nf tige same.

TO ALL WHOM IT MAY CONCERN:

Be it known that I, SAMUEL PATTON, of Chatsworth, in the county of Livingston, and State of Illinois, have invented a n'ew and improved Belt-Tightener; and I do hereby declare that the following isa full, clear, and exact description of the construction and operation ofthe sc me, reference being had to the accompanying drawing, making'a part .of this specification, in whichi Y My invention is represented by a longitudinal vertical section.

'The object of this invention is'to provide a. simple-and effective attachinent to belt-pulleys, by which the,

belt can be tightenedrto any required degree without diiiculty.

This object is fully attained Vby employing two small revolving drums, which clamp the belt to its pulleys, the drums having yspring bearings, and being so constructed Yand supported that theycan be made to press against the belt with any required degree 'of force. l

In the drawings, A A.' are the shafts, and B B' the belt-pulleys, C being the belt. To tighten the latter, I employ the drums D D', supportedin spring bearings E E', which can be adjusted by screws F F', or other regulating-device, so as to press with any required force upon the pulleys B, orupon the belt C. The tightening-pulleys are sov arranged that they press against the belt, at some point where it is in contact with its pulleys, and bear it down against their surface, the drums operating on the same side or upon `different sides of the belt-pulleys. vBy this means, the belt is held tightly against the surface of the pulleys, and is kept tightener] on one side, hanging slack on the other side between them. b

This device keeps the belt so completely in contact with the face of its pulleys'that'motion is transmitted from one shaft to the other, with perfect uniformity and certainty, even though one side of the belthangs slack, as shown in the drawings. 1

Having thus described my invention, what I claim as new, and desire to secure by LettersPatent, is-

1. The arrangement ofthe drums D D', in connection with the belt Gand pulleys B B', in such a manuel`- that the drums press the belt directly against the surface of the pulleys, substantially as described.

2. The combination and arrangement of the belt C, drums D D', pulleys B B', spring bearings E E', and

" adjustinglscrews, or their equivalent, F F', substantially as'shown and described.-

- SAMUEL PATTON. Witnesses: f

CEAS. A. PETTIT, SoLoN C. KEuoN. 

